Slot machines used to fill entire walls with screens over 40 inches wide, heavy...

https://zanesnewthoughtss.evergrovio.com/posts/do-modern-slot-cabinets-still-need-cooling-components

Slot machines used to fill entire walls with screens over 40 inches wide, heavy cabinets, and flashing lights. Now, many games fit neatly on 6-inch phone screens, letting you spin reels anytime and anywhere